Device for securing edging strips to boxes



pt. 3, 19 K. E. P. JORKE 2,213,707

DEVICE FOR SECURING EDGING STRIPS T0 BOXES Filed Feb. 25, 1939 PatentedSept. 3, 1940 UNITED STATES PATENT OFFICE DEVICE FOR SECURING EDGINGSTRIPS TO BOXES Germany Application February 25, 1939, Serial No.258,432 In Germany February 28, 1938 3 Claims.

This invention relates to a device for securing a covering strip toboxes...,

It is known to secure covering strips to boxes by employing devices inwhich the boxes with the covering strips are moved past pressureapplying members and brushes arranged one after the other, the pressureapplying members comprising either stationary rolls or spring-actuatedfingers. In these instances these elements serve 10 as application meansonly during the forward motion of a box and their action is thereforerestricted to a short distance, or there is only one pressure memberwhich does not givea suflicient pressure time.

15 According to the invention, several brushes and pressure members arealternately arranged one after another. Therefore, the pressing. andbrushing eifect takes place several times. The pressure members disposedbetween the brushes are constructed to form pressure jaws having nearlythesame length as the length of the side edges of the box and carryingout a motion horizontally at right angles to the conveying direction ofthe boxes with the strips to press the strips firmly between the sidewall or walls of the box. The device according to the invention actstherefore over a certain length for the purpose of distributingapplication pressure as uniformly as possible over the length of theside n walls. The pressure jaws may be arranged on both length sides ofthe walls or only on one side. In this case, opposite the jaws abutmentsare provided which. also extend over a certain part of the side edges ofa box and are adjustably 35 disposed for automatically adaptingthemselves to the longitudinal side wall of a box. The boxes are thusalternately passed between brushes and pressure jaws, and the latterexert uniformly distributed pressure upon the two longitudinal 40 sidewalls of a box. Owing to the effect that the boxes are repeatedlysubjected to pressing and brushing good adhesion of the covering stripsis insured even in difficult cases in a relatively short time, so thatedging strips may be applied also to w packages covered with metal foil.

The pressure jaws preferably act while the boxes stand still and duringadvance of the latter are removed from the application channel bycontrol members. This feature distinguishes the 50 device according tothe invention also from a known machine in which boxes are surroundedwith strips in two directions running vertically to one another and thefree ends of the strips are applied by pressure members in the second 55brush channel. In this known machine the pressure members do not servefor applying the strips to the longitudinal side walls of the package.

The invention is illustrated by way of example in the accompanyingdrawing, in which Figure l is a top view of the device; 5

Fig. 2, a front view thereof; and

Fig. 3, a cross section of an application station in the direction a, b.

The boxes I pass through the edging strip feed channel 2 to the pressurechannel 3. In the channel 2 a covering strip 5 is placed around threesides of a box I by means of brushes 4. At the point of transition fromthe feeding and application channel 2 to the pressure channel 3 the boxI abuts against a stop surface 6, and a slide I provided with a fingerat its front end applies the projecting rear end of the strip 5 to thefourth side of the box I. The box I is then advanced by a piston 8, andwhile the box is introduced into the pressure channel 3 an abutment 9applies the end of the strip 5 that is not yet glued on to the fourthside.

The channel 3 contains brushes III of known type and also pressermembers which repeatedly act upon the side walls of the box I invertical direction to secure the strip 5 firmly to the circumference ofthe box I. These presser members may act upon the two longitudinal sidewalls of the box I, i. e. the side that is to form the hinge and theside where the box is to be opened.

In the construction shown the presser members are arranged on one sideonly, and on the opposite side abutments II are provided. The pressermembers comprise jaws I2 subjected to the action of the springs I3 andguided by means of pins I I in special guides I5 of the machine frame.The two pins M of each jaw or presser plate I2 are connected by a crossbar It behind which engages a nose III of a control member I8 movableabout a shaft I9, as shown in Figs. 3 and 2. The control members I8 withtheir noses II for all presser members have a common drive so that eachbox I is subjected to repeated pressure while it is positioned between ajaw I2 and an abutment II. The abutments II are rotatable about pins 20and can thus automatically adapt themselves to the surfaces of theside-edges of a box I.

It is further possible of course to provide for a yielding arrangementof the abutments I I.

When the boxes I have been moved past the application members or brushesII] and the presser members I I, I2, they are guided into a cuttingchannel, where they pass in known manner cutting knives.

The device functions as follows:

The boxes I coming from the application channel 2 and surrounded onthree sides by the strip 5 pass into the pressure channel 3 in whichthey are advanced to the extent of the length of a box by the piston 8after the slide I has previously applied the projecting end of the strip5 to the fourth side. During the forward motion of the box I the strip 5is simultaneously applied to the fourth Side of the box by the abutment9. The boxes I with the strip 5 applied thereto then move between thebrushes l0 and at the next stroke pass within range of the firstpressure means ll, l2 which repeatedly exert pressure upon the sidewalls of the boxes to secure the strip 5. During the next step the boxesI are moved again past brushes l0 whereupon they are conducted again topressure means ll, I2.

These operations can be repeated as often as required.

I claim:

1. In a device for securing strips to boxes,

in which the boxes each with a strip adhering thereto are successivelymoved past presser members and brushes, the combination of a pluralityof several pressure members and brushes arranged alternately one afteranother, the presser members having pressure jaws nearly the same lengthas the length of the side edges of a box, and means carrying out amotion horizontally at right angles to the conveying direction of theboxes to press the strip firmly upon the side wall or walls of the box.

2. In a device according to claim 1, spring actuated means for thepressure jaws and control means for moving the jaws out of the way ofthe boxes during forward motion of the boxes.

3. In a device according to claim 1, the pressure jaws being arrangedonly on one length side of the boxes, and adjustable abutments oppositethe pressure jaws, capable of automatically adapting themselves to thelongitudinal wall of a box.

KARL ERNST PAUL JORKE.

